JPS58133546A - Heat pump type floor heating apparatus - Google Patents

Abstract

PURPOSE:To make it possible to perform a heating operation which is comfortable and healthy to the human body by a method wherein a floor heating unit and an indoor cooling unit are operated side by side at the time of heating operation. CONSTITUTION:The floor heating unit A having a floor heat exchanger 1, a heat exchanger for cooling, the indoor cooling unit B haveing a blower 3 and an outdoor unit C having heat exchangers 5 and 8 which consitute a cooling cycle by connecting the units A and B are provided and the units A and B are operated side by side at the time of heating operation. That is, cool air blown out by the blower 3 is so adjusted that it is blown out toward the space between the ceiling and one's head at the time of heating operation. Thus, when the heating operation is started, hot air flows along the surface of the floor while the cool air flows along the ceiling so that a head cooling and foot warming heating operation which is pleasant and healthy to the human body can be performed. Further, it is possible to collect heat generating in the space which does not serve to warm the human body and to utilize such heat effectively by radiating it from the surface of the floor so that the efficiency of the entire system is improved to a remarkable degree.

Description

Detailed Description of the Invention One of the purposes of the present invention is to improve the legality of heating using a heat pump type floor heating system, and also to recover the amount of heat that is not used effectively in the living space. Another objective is to improve the efficiency of

In general, the heating method that cools the head and warms the feet is considered to be the most comfortable heating method, and floor heating has a nearly uniform temperature distribution, so it is better than forced convection heating, where the ceiling is hot and the floor is cold. It is said to be closer to the heating of the head and feet.

For this reason, various heat pump floor heating devices have been proposed.

As an example of the conventional structure, there is a structure shown in Japanese Utility Model Publication No. 55-34546. The configuration of this invention uses both the indoor heat exchanger and the floor heat exchanger as a condenser (that is, a radiator) during heating.

By the way, as mentioned above, since the temperature distribution in the room during heating by the floor heating device is extremely uniform, the ambient temperature of the human body is almost the same temperature.

In such an atmosphere where the ambient temperature of the human body is almost the same between the head and the feet, the head feels physically hot, which has the disadvantage of causing drowsiness. Also, during heating, spaces that are not used for heating the human body, such as ceilings and walls, are also heated.

Most of the heat in this space is wasted as it leaks through the ceiling, walls, etc. to the outside air, increasing the heating load more than necessary and causing ignition and ignition. Note that this drawback is not limited to this conventional example, but is common to all general heating systems.

Still another conventional example is the configuration shown in Japanese Utility Model Publication No. 55-24529. The configuration of this invention does not allow refrigerant to flow through the indoor heat exchanger during heating, and heat is radiated only through the floor heat exchanger. This configuration also has the same drawbacks as the conventional example.

The present invention provides a floor heating unit having a floor heat exchanger, an indoor cooling unit having a cooling heat exchanger and a blower, and a heat exchanger that is connected to the floor heating unit and the indoor cooling unit to form a refrigeration cycle. The present invention has an outdoor unit having an outdoor unit, each having an independent refrigeration cycle, and operates the floor heating unit and the indoor cooling unit together during heating operation, thereby improving the above-mentioned drawbacks of the conventional method.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a schematic configuration diagram of a beat pump type floor heating device which is an embodiment of the present invention. It is a vessel. B is an indoor cooling unit, which is installed near the ceiling of the room. 2 is a cooling heat exchanger, and 3 is an air blower. C is an outdoor unit, and 4, 5, and 6 are a compressor, a heat exchanger, and a throttle device that are connected to the floor heating unit to form a refrigeration cycle, respectively. Also 7°8.
Reference numerals 9 denote a compressor and a heat exchanger that are connected to the indoor cooling unit B to form a refrigeration cycle.

It is a diaphragm device. Furthermore, 10 is the floor heating unit,
This is an operation control device for the indoor cooling unit B and the outdoor unit C. Note that the two heat exchangers 6 and 8 of the outdoor unit are arranged so as to be able to exchange heat with each other.

FIG. 2 is an electrical circuit diagram of this embodiment, where 11 is a power supply;
2 indicates a power switch, which is turned on during system operation. 13 is a switching device for cooling operation and heating operation, which is turned on during heating operation.

Next, the operation of the heat pump type floor heating device having the above configuration will be explained.

First, heating operation will be explained. Since it is a heating operation, the cooling/heating operation is switched and the device 13 is turned on. When the power switch 12 is turned on to start operation, the compressor 4 of the floor heating unit and the compressor 7 of the indoor cooling unit are turned on.
, the blower device 3 is operated. When the compressor 4 for the floor heating unit is operated, the high temperature, high pressure gas refrigerant discharged from the compressor 4 radiates heat in the floor heat exchanger 1 and is condensed, and is depressurized in the expansion device 6. It becomes low temperature and low pressure, and is further evaporated in the floor heating heat exchanger 6 of the outdoor unit and returned to the compressor 4, forming a well-known floor heating cycle. On the other hand, when the compressor 7 for the indoor cooling unit is operated, the high temperature and high pressure gas refrigerant discharged from the compressor 7 is condensed in the indoor cooling heat exchanger 8 of the outdoor unit, and the pressure is reduced by the expansion device 9. It becomes low temperature and low pressure and flows into the indoor cooling heat exchanger 2. Since the air blower in the indoor cooling unit is in operation, the refrigerant exchanges heat with the indoor air by the indoor cooling heat exchanger 2, is evaporated, and returns to the compressor 7, resulting in a well-known forced convection cooling cycle. is formed. Furthermore, during heating operation, the cold air blown by the air blower 3 is adjusted in the direction in which it is blown from the ceiling toward the space between the human head.

When this kind of heating operation is carried out, heating and
Air conditioning is provided from the ceiling, and as a result, the human head is in an atmosphere with a lower ambient temperature than the feet, so the feet are warm and the head is slightly cold, creating what is called a cold-head-heat heating.

For this reason, it is physically comfortable and good for health.

Further, the amount of heat that is not effectively used for heating the human body during heating of the ceiling, walls, etc. is recovered by the indoor cooling unit B and sent to the indoor cooling heat exchanger 8 of the outdoor unit C.

On the other hand, since the two heat exchangers 6 and 8 of the outdoor unit) B are arranged so that they can exchange heat with each other, the amount of heat supplied to the cooling cycle and the indoor cooling unit) B
Most of the heat recovered is given to the heat exchanger 5 and further sent to the floor heat exchanger. From this,
Most of the heat recovered indoors is used again for heating, so it is not used effectively in the ceiling.

Heat from walls, etc. can be effectively used on the floor, and the efficiency of the entire system can be significantly improved.

Next, cooling operation will be explained.

Since it is cooling operation, the cooling/heating operation switch 13 is set to O.
It will be FF. For this reason, the compressor 4 of the floor heating uni-notom is not operated, and only the indoor cooling unit) B is operated to perform normal cooling operation.

Next, another embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a schematic diagram of another embodiment. Components that are the same as those in FIG. 1 are given the same numbers and their explanation will be omitted.

In Fig. 3, 14 is a compressor, 15 is a four-way switching valve, 1
6 is an outdoor heat exchanger, 17 is a capillary tube for both cooling and heating, and 18 is a non-return check provided to prevent the flow of refrigerant from the indoor cooling heat exchanger 2 to the floor heat exchanger 1. Valve 19 is a heating capillary tube, 2o is the check valve 18. It is a check valve provided in a conduit that bypasses the heating capillary tube 192 and the floor heat exchanger 1, and is a check valve provided in a pipe that bypasses the heating capillary tube 192 and the floor heat exchanger 1, and is a check valve that connects the room cooling heat exchanger 2 to the four-way switching valve 16.
Fig. 4 is an electrical circuit diagram of another embodiment, and the same parts as in Fig. 2 are given the same numbers and their explanations are omitted.

In the same figure, the switching device 13 for cooling operation and heating operation is turned ON during heating operation, switches the four-way switching valve 15 to flow the refrigerant as shown by the solid line arrow in FIG. The four-way switching valve 16 is switched so that the refrigerant flows as indicated by the broken line arrow in the figure.

Next, the operation will be explained. First, heating operation will be explained.

When the power switch 11 is turned on and the cooling/heating switch 13 is turned on, the blower 3 and compressor 14 of the indoor cooling unit B are operated. Furthermore, the four-way switching valve 16 is switched to heating operation. The high-temperature, high-pressure refrigerant discharged from the compressor 14 flows as shown by the solid line arrow, radiates heat in the floor heat exchanger 1 via the four-way switching valve 15, is condensed, and is then transported indoors by the heating capillary tube 19. The pressure is reduced to an intermediate pressure capable of cooling, and the air flows into the indoor cooling heat exchanger 2 via the check valve 18 . Here, the air blower 3 exchanges heat with the indoor air and evaporates a portion of the cold air.
The pressure is further reduced in the heating capillary tube 17 to a low temperature and pressure, evaporates in the outdoor heat exchanger 16, and returns to the compressor 14 via the four-way switching valve 15. moreover,
The direction of the cold air blown by the air blower 3 is directed from the ceiling to the space between the human head, as in the previous embodiment.

When this heating operation is performed, the same effect as in the embodiment is achieved, that is, it is physically comfortable and healthy heating can be performed, and the heat from the ceiling, walls, etc., which is not effectively used for heating the human body, is transferred to the floor. This has the effect of significantly improving the efficiency of the entire system.

Next, cooling operation will be explained.

When the cooling/heating switch 13 is opened and cooling operation is performed,
When the air blower 3 and the compressor 14 of the indoor cooling unit B are operated, the four-way switching valve 16 is switched to flow the refrigerant as indicated by the broken line arrow. The compressor 14
High temperature discharged from.

The high-pressure refrigerant radiates heat and condenses in the outdoor heat exchanger 16 via the four-way switching valve 16 as shown by the broken line arrow, and is depressurized in the cooling/heating capillary tube 17 to become low temperature and low pressure, and is then used to exchange heat for indoor cooling. In the chamber 2, the air is evaporated by exchanging heat with indoor air by the blower 3, and then returned to the compressor 14 via the check valve 20B and the four-way switching valve 16.

On the other hand, since the refrigerant does not flow into the floor heat exchanger 1 due to the check valve 18, it is not cooled and no dew condensation occurs. Furthermore, refrigerant does not accumulate. This cooling operation achieves the well-known forced convection type cooling.

Furthermore, in the above two embodiments, the indoor cooling unit) B is installed near the ceiling, but when it is installed on the floor, the cooling air blowing direction can be set at or above the head of the person. The effect of cooling the head and keeping the feet warm is obtained, and since the heat that is not used for heating the human body around the indoor cooling unit (B) is also recovered, there is no possibility of reducing the efficiency of the entire system.

As is clear from the above description, the heat pump type floor heating device of the present invention includes a floor heating unit having a floor heat exchanger, an indoor cooling unit having a cooling heat exchanger and a blower, and the floor heating unit. and an outdoor unit having a heat exchanger that is connected to the indoor cooling unit to form a refrigeration cycle, and the floor heating unit and the indoor cooling unit are operated together during heating operation, and is used for heating for cold feet and head. This has the great effect of providing a comfortable and healthy heating experience, as well as recovering heat from spaces that are not used for heating the human body, dissipating it from the floor and using it effectively. This has the advantage that the efficiency of the entire system can be significantly improved.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a heat pump floor heating system according to an embodiment of the present invention, Fig. 2 is an electric circuit diagram of the same floor heating system, and Fig. 3 is a heat pump type floor heating system according to another embodiment of the present invention. A schematic configuration diagram of the floor heating device, and FIG. 4 is an electric circuit diagram of the same floor heating device. M...Floor heating unit, B...Indoor cooling unit, C...Outdoor unit, 1...
...Floor heat exchanger, 2...Cooling heat exchanger, 3
...Blower, 6,8゜16... Heat exchanger for outdoor unit y), 10... Operation control device. Name of agent: Patent attorney Toshio Nakao and one other person Figure 1 Figure 2 Figure 3rI! J Figure 4

Claims (1)

[Claims] A floor heating unit having a floor heat exchanger, an indoor cooling unit having a cooling heat exchanger and an air blower, and a heat exchanger that is connected to the floor heating unit and the indoor cooling unit to form a refrigeration cycle. A heat pump type floor heating device comprising an outdoor unit and configured to operate the floor heating unit and the indoor cooling unit together during heating operation.